Patents by Inventor Seong-Hwan Choi
Seong-Hwan Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240145913Abstract: The present disclosure relates to a phase shifter and a communication device including the same, and particularly, to a phase shifter including a base panel; a fixed substrate which is laminated and fixed on one side or another side on the base panel and has a plurality of circuit patterns printed on the top surface thereof; and a phase shift switching part provided with a plurality of movable substrates including movable strip terminal which are in contact with the plurality of circuit patterns of the fixed substrate, wherein the phase shift switching part is configured to reciprocate the plurality of movable substrates within a predetermined distance in a horizontal direction on the base panel to change the positions of contact points of the movable substrates with respect to the circuit patterns, wherein the phase shift switching part moves the plurality of movable substrates while elastically supporting the plurality of movable substrates toward the circuit patterns, thereby providing an advantage of maxiType: ApplicationFiled: January 7, 2024Publication date: May 2, 2024Applicant: KMW INC.Inventors: Sung Hwan SO, Oh Seog CHOI, Seong Man KANG, Hyoung Seok YANG, Yong Won SEO, Cha Gun GANG
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Publication number: 20240145939Abstract: A dual polarization antenna is disclosed in at least one embodiment of the present disclosure, including a base substrate, a power feeding unit supported on the base substrate, and a radiating plate supported on the power feeding unit, the power feeding unit includes a first feeding substrate and a second feeding substrate arranged to cross each other on the base substrate, the first feeding substrate includes a first feed line configured to supply a first reference phase signal to a first point on the radiating plate and to supply a first reverse phase signal having a reverse phase relative to the first reference phase signal, to a second point on the radiating plate, the second feeding substrate includes a second feed line configured to supply a second reference phase signal to a third point on the radiating plate and to supply a second reverse phase signal having a reverse phase relative to the second reference phase signal, to a fourth point on the radiating plate, and wherein the first feeding substrateType: ApplicationFiled: December 15, 2023Publication date: May 2, 2024Applicant: KMW INC.Inventors: Sung Hwan SO, Oh Seog CHOI, Seong Man KANG, Yong Won SEO, Myung Hwa KIM, Su Yong LEE
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Patent number: 11951508Abstract: The present technology relates to an electrode slurry-discharging shim, and a coating die comprising same, the present technology allowing superbly even coating to be assured even when the electrode slurry coating is at a high load level. In one example, the present technology provides a coating shim for electrode slurry discharge according to the present invention having a step portion configured to be formed at an end of an electrode slurry discharge flow path and to increase a width of the discharge flow path, and the step portion is formed at opposite sides in a width direction of the electrode slurry discharge flow path.Type: GrantFiled: December 18, 2020Date of Patent: April 9, 2024Assignee: LG Energy Solution, Ltd.Inventors: Jong Hwan Choi, In Seong Kim, Min Cheol Choi
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Patent number: 11953958Abstract: A display includes: a display panel; and a panel bottom sheet disposed below the display panel, the panel bottom sheet including: a first heat dissipation layer; a second heat dissipation layer over the first heat dissipation layer, including a first opening formed completely through the second heat dissipation layer in a thickness direction; a heat dissipation coupling interlayer between the first heat dissipation layer and the second heat dissipation layer, and a heat dissipation substrate on the second heat dissipation layer.Type: GrantFiled: December 12, 2022Date of Patent: April 9, 2024Assignee: Samsung Display Co., Ltd.Inventors: Kang Woo Lee, Boo Kan Ki, June Hyoung Park, Sun Hee Oh, Dong Hyeon Lee, Jeong In Lee, Hyuk Hwan Kim, Seong Sik Choi
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Patent number: 11946541Abstract: A method of controlling an EOP of a powertrain may include determining, by a controller electrically connected to the EOP, whether an oil sloshing phenomenon in which it is difficult for oil to return to a space where an oil intake port of the EOP is positioned may occur while a vehicle is running; and reducing, by the controller, the revolutions per minute (RPM) of the EOP by a predetermined reduced RPM when it is determined that the oil sloshing phenomenon may occur.Type: GrantFiled: August 20, 2021Date of Patent: April 2, 2024Assignees: Hyundai Motor Company, Kia CorporationInventors: Sung Sik Choi, Kyung Moo Lee, Seong Min Son, Ki Bum Kim, Se Hwan Jo, Bong Uk Bae
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Patent number: 11925084Abstract: A display panel can include a substrate, a light-emitting element including an emission region on the substrate, a reference voltage line adjacent to the light-emitting element, and a branch line connected to the reference voltage line to apply a reference voltage to light-emitting element. The light-emitting element can emit light on the emission region in a direction of the substrate. Further, the branch line can include a semiconductor layer, and the semiconductor layer of the branch line can overlap the emission region.Type: GrantFiled: December 16, 2022Date of Patent: March 5, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Dong Yoon Lee, Kwang Yong Choi, Seong Hwan Hwang, Byeong Uk Gang, Hye Min Park
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Patent number: 10717697Abstract: The present invention relates to a method for preparing 1,3-cyclohexanedicarboxylic acid capable of exhibiting excellent activity, of enhancing the reaction efficiency and economic efficiency by using a catalyst having improved durability under the reaction conditions of high temperature and strong acid, of achieving excellent conversion rates by allowing most of reactants to participate in the reaction, and of obtaining products having high purity while minimizing by-products within a shorter period of time. The method for preparing 1,3-cyclohexanedicarboxylic acid may include: reducing isophthalic acid in the presence of a metal catalyst fixed to a silica support and containing a palladium (Pd) compound and a copper (Cu) compound in a weight ratio of 1:0.1 to 0.5.Type: GrantFiled: September 27, 2017Date of Patent: July 21, 2020Assignee: LOTTE CHEMICAL CORPORATIONInventors: Sung Min Kim, Mi Sun Cha, Seong Hwan Choi, Young Heon Choi, Sung Joon Park, Chan Yeong Yun, Young Jong Seo
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Patent number: 10597344Abstract: The present invention relates to a method for preparing high-purity 1,3-cyclohexanedimethanol capable of achieving a high conversion rate by allowing most of the reactant to participate in the reaction, and of increasing reaction efficiency and economic efficiency by further simplifying the reaction process, while minimizing by-products within a shorter period of time. Specifically, the method for preparing 1,3-cyclohexanedimethanol includes reducing 1,3-cyclohexanedicarboxylic acid in the presence of a metal catalyst, which is fixed to a silica support and includes a ruthenium (Ru) compound, a tin (Sn) compound and a platinum (Pt) compound in a weight ratio of 1:0.8 to 1.2:1.2 to 2.4.Type: GrantFiled: September 5, 2017Date of Patent: March 24, 2020Assignee: Lotte Chemical CorporationInventors: Mi Sun Cha, Seong Hwan Choi, Sung Min Kim, Sung Joon Park, Chan Yeong Yun, Young Heon Choi
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Publication number: 20190225568Abstract: The present invention relates to a method for preparing 1,3-cyclohexanedicarboxylic acid capable of exhibiting excellent activity, of enhancing the reaction efficiency and economic efficiency by using a catalyst having improved durability under the reaction conditions of high temperature and strong acid, of achieving excellent conversion rates by allowing most of reactants to participate in the reaction, and of obtaining products having high purity while minimizing by-products within a shorter period of time. The method for preparing 1,3-cyclohexanedicarboxylic acid may include: reducing isophthalic acid in the presence of a metal catalyst fixed to a silica support and containing a palladium (Pd) compound and a copper (Cu) compound in a weight ratio of 1:0.1 to 0.5.Type: ApplicationFiled: September 27, 2017Publication date: July 25, 2019Inventors: Sung Min KIM, Mi Sun CHA, Seong Hwan CHOI, Young Heon CHOI, Sung Joon PARK, Chan Yeong YUN, Young Jong SEO
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Publication number: 20190202761Abstract: The present invention relates to a method for preparing high-purity 1,3-cyclohexanedimethanol capable of achieving a high conversion rate by allowing most of the reactant to participate in the reaction, and of increasing reaction efficiency and economic efficiency by further simplifying the reaction process, while minimizing by-products within a shorter period of time. Specifically, the method for preparing 1,3-cyclohexanedimethanol includes reducing 1,3-cyclohexanedicarboxylic acid in the presence of a metal catalyst, which is fixed to a silica support and includes a ruthenium (Ru) compound, a tin (Sn) compound and a platinum (Pt) compound in a weight ratio of 1:0.8 to 1.2:1.2 to 2.4.Type: ApplicationFiled: September 5, 2017Publication date: July 4, 2019Inventors: Mi Sun CHA, Seong Hwan CHOI, Sung Min KIM, Sung Joon PARK, Chan Yeong YUN, Young Heon CHOI
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Patent number: 9663426Abstract: Disclosed are a composite metal catalyst composition capable of increasing efficiency and economic feasibility of a reaction through simplification of a reaction process, and providing 1,4-cyclohexanedimethanol with high purity for a shorter time while minimizing byproducts; and a method and apparatus for preparing 1,4-cyclohexanedimethanol with high purity using the same. The present invention provides a composite metal catalyst composition for converting an aromatic dicarboxylic acid into an alicyclic diol compound, the composition containing: a first metal catalyst including a palladium (Pd) compound; and a second metal catalyst including a ruthenium (Ru) compound, a tin (Sn) compound, and a platinum (Pt) compound, and a method and apparatus for preparing 1,4-cyclohexanedimethanol using the same.Type: GrantFiled: April 7, 2015Date of Patent: May 30, 2017Assignee: LOTTE CHEMICAL CORPORATIONInventors: Young Heon Choi, Hyun Woo Park, Sung Joon Park, Seong Hwan Choi, Mi Sun Cha, Seong Min Kim, Young Jong Seo
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Publication number: 20170107164Abstract: Disclosed are a composite metal catalyst composition capable of increasing efficiency and economic feasibility of a reaction through simplification of a reaction process, and providing 1,4-cyclohexanedimethanol with high purity for a shorter time while minimizing byproducts; and a method and apparatus for preparing 1,4-cyclohexanedimethanol with high purity using the same. The present invention provides a composite metal catalyst composition for converting an aromatic dicarboxylic acid into an alicyclic diol compound, the composition containing: a first metal catalyst including a palladium (Pd) compound; and a second metal catalyst including a ruthenium (Ru) compound, a tin (Sn) compound, and a platinum (Pt) compound, and a method and apparatus for preparing 1,4-cyclohexanedimethanol using the same.Type: ApplicationFiled: April 7, 2015Publication date: April 20, 2017Applicant: LOTTE CHEMICAL CORPORATIONInventors: Young Heon CHOI, Hyun Woo PARK, Sung Joon PARK, Seong Hwan CHOI, Mi Sun CHA, Seong Min KIM, Young Jong SEO
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Patent number: 7747554Abstract: Provided is a real-time business process triggering system (RBPTS) using a Radio Frequency Identification (RFID) and a method thereof. The RBPTS is to provides interface to a corporation information system by generating an RFID event proper to a specific domain by giving the RFID data a business meaning to apply the RFID data to a predetermined rule before transmitting the RFID data to the corporation information system, provide a rule modeling function to flexibly managing changes in application field and environment, and provide an RFID related-action related to rule performance, and a method thereof.Type: GrantFiled: December 29, 2004Date of Patent: June 29, 2010Assignee: Electronics and Telecommunications Research InstituteInventors: Jae-Gak Hwang, Seong-Hwan Choi, Yong-Joon Lee, Sung-Wook Kim, Jong-Suk Chae
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Publication number: 20080294585Abstract: Provided is a real-time business process triggering system (RBPTS) using a Radio Frequency Identification (RFID) and a method thereof. The RBPTS is to provides interface to a corporation information system by generating an RFID event proper to a specific domain by giving the RFID data a business meaning to apply the RFID data to a predetermined rule before transmitting the RFID data to the corporation information system, provide a rule modeling function to flexibly managing changes in application field and environment, and provide an RFID related-action related to rule performance, and a method thereof.Type: ApplicationFiled: December 29, 2004Publication date: November 27, 2008Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITInventors: Jae-Gak Hwang, Seong-Hwan Choi, Yong-Joon Lee, Sung-Wook Kim, Jong-Suk Chae